Core: Only reset wiimotes in Wii mode

This was causing the FifoCI runners to crash, as the Wiimotes were not
initialized in the first place.

Source/Core/Core/Core.cpp

@@ -290,7 +290,9 @@ void Stop()  // - Hammertime!
     g_video_backend->Video_ExitLoop();
   }
 
+  if (_CoreParameter.bWii)
     Wiimote::ResetAllWiimotes();
+
   ResetRumble();
 
 #ifdef USE_MEMORYWATCHER